Lampshade



FIG. 1 is a perspective view of a lampshade showing my design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a rear elevational view thereof.

The broken lines in the drawing are for illustrative purpose only. 

The ornamental design for a lampshade, substantially as shown and described. 